Best Instant On Water Heaters In April 2024

Check out our product review of the Best Instant On Water Heaters. We tried 10 models and can tell you the absolute best varieties.

To help you in your search, we have completed this list of the Best Instant On Water Heaters.

Top Rated Best Instant On Water Heaters Of 2024

Rank	Product Name	Score
1	Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time Buy Now	9.7 Buy Now
2	Portable Propane Tankless Water Heater, 1.32GPM/5L Capacity, 6 in 1 Safety Function, 7 Buy Now	9.5 Buy Now
3	Camplux ME40 Mini Tank Electric Water Heater 4-Gallon,120 Volts Buy Now	9.1 Buy Now
4	Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time Buy Now	8.8 Buy Now
5	110V-120V Electric Mini-Tank Hot Water Heater Storage,1.5KW Kitchen Household Compact Size Point-of-Use, Hot Buy Now	8.6 Buy Now
6	Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt Buy Now	8.3 Buy Now
7	EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Buy Now	8.1 Buy Now
8	EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Buy Now	7.8 Buy Now
9	Marey GA10NGDP 3.1 GPM Natural Gas Digital Panel Tankless Water Heater Buy Now	7.5 Buy Now
10	Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, small, GREY Buy Now	7.2 Buy Now

1. Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time

1

Buy Now

9.7/10 our score

Buy Now

• Independent installation: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
• Long lasting quality: this electric water heater is easy to maintain and has premium glass-lined material for a long service life. (amps 12a, volts (vac) 120)
• Convenient hot water heater: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. thermal efficiency is 98%. dimensions : 13.75 w x 13.75 h x 13.5 d inches
• Easily mounted: can be shelf, wall or floor mounted (bracket included), simply tap into the cold water line and install the water heater directly at the sink to provide hot water
• Fast recovery rate: eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)

2. Portable Propane Tankless Water Heater, 1.32GPM/5L Capacity, 6 in 1 Safety Function, 7

2

Buy Now

9.5/10 our score

Buy Now

• Easy to install low pressure startupjust need 2.5psi of water pressure, no electricity needed, the ignition is with 2 d cell batteries. connect gas supply water supply, now you and your lovely family lovely pet can enjoy endless hot showers anywhere anytime
• Love endless hot showersother tankless water heater on the market have limited support and poor quality. this outdoor tankless water heater is the real deal! and if you have any questions, concerns or issues, our friendly and helpful support team can be reached at phone call and mail email ,protected
• Fully equippedno need to look around for accessories, this tankless water heater comes with csa approval gas regulator, high pressure shower head with 59in(1.5m) extended long stainless steel hose and shower holder, dust cover, handle(fitted already), wrenches, us universal gas connector, garden hose connectors, teflon tape, and fitting kits
• 6-in-1 multifunctional safety protectionensure home safety, oxygen depletion safety shut-off protection, over-heating protection, anti-freezing protection, flameout protection, thermal protection, mini and open design to prevent excessive surface temperature
• 7 more usage scenariosperfect heater shower for before and after swimming in your pool or lake. your dog will love the spa-like experience. no more cold outdoor baths with the hose - you can use the detachable shower head to easily wash your pets with warm water they will appreciate. perfect for diy outdoor shower, rv shower, camping shower, outdoor pet shower, rv/su...

3. Camplux ME40 Mini Tank Electric Water Heater 4-Gallon,120 Volts

3

Buy Now

9.1/10 our score

Buy Now

• Plugs into 120 volt outlet for independent installation or in-line with a large hot water source.(max. water pressure is 150 psi,csa listed temperature & pressure relief valve included)
• Thermostat control allows adjustment of water temperature.high limit device provide protection while overheating.
• Electric water heater is easy to maintain and has glass-lined tank for long service life
• 4-gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it
• Can be shelf, wall or floor mounted, simply tap into the cold water line and install the water heater directly at the sink to provide hot water. product dimension:11.75" w x 22" h x 10.38" d.

4. Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time

4

Buy Now

8.8/10 our score

Buy Now

• Long lasting quality: this electric water heater is easy to maintain and has premium glass-lined material for a long service life. (amps 12a, volts (vac) 120)
• Convenient hot water heater: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. thermal efficiency is 98%. dimensions : 13.75 w x 13.75 h x 10.75 d inches
• Easily mounted: can be shelf, wall or floor mounted (bracket included), simply tap into the cold water line and install the water heater directly at the sink to provide hot water
• Fast recovery rate: eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
• Independent installation: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source

5. 110V-120V Electric Mini-Tank Hot Water Heater Storage,1.5KW Kitchen Household Compact Size

5

Buy Now

8.6/10 our score

Buy Now

• Safe durable & longevitymade of stainless steel and never rustanti-leakage plugmultiple safety protection functions protect you from the risk of scald, leakage or other injury.premium plastic shell is corrosion resistantthis mini hot water heater is ideal for kitchen, bar, school, hospital, community and rv.
• Compact designcan be shelf, wall or floor mounted (water inlet and outlet upward), dimensions: 13.0''l x11.4''w x10.6''h, 9.5lbs, 1/2npt npt. 1.5 kw, 110-220 volts. one-year warranty and 24h customer service support, feel free to contact us.
• Smart inverter for energy savingautomatic heat preservation and storage of hot water, 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. thermal efficiency is 98%maximum temperature167the built-in smart chip heats up to the temperature you set, and automatically insulation when heated to the specified temperature.
• Fast recovery rateeliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time8-15 minutes to heat to your desired temperature).
• Easy to usestorage tank electric water heater with easy-to-operate knob temperature adjustment designeasy to control warmth.vent valve, tee pipeline pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories.

6. Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt

6

Buy Now

8.3/10 our score

Buy Now

• Can provide hot water for one sink at 0.5 gpm in warmer climates
• Connection fittings 1/2" npt
• Amperage draw 29 amp. kw - 3.5 kw
• For one sink at 0.5 gpm in colder climates the pou 6 is recommended
• Requires 1 x 30 amp breaker and 10 awg wire

7. EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5

7

Buy Now

8.1/10 our score

Buy Now

• Savings of up to 50% on water heating costs. dimensions :17h x 17w x 3.625d inches ,pipes fittings :3/4 inch npt
• Never run out of hot water with an ecosmart tankless water heater.
• Digital temperature control in 1-degree increments allows control of hot water, activation flow: 0.3 gpm
• Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and copper and stainless components designed for efficiency, durability and easy replacement.
• Required breaker quantity: three 40 amp double pole
• Digital temperature control in 1-degree increments gives users complete control of hot water

8. EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented

8

Buy Now

7.8/10 our score

Buy Now

• Ecosmart tankless water heaters are 99.8-percent energy efficient.uniform energy factor:0.98
• Lifetime warranty
• Never run out of hot water with an ecosmart tankless water heater
• Save up to 60-percent on your water heating cost with an ecosmart electric tankless water heater
• Patented self modulating technology and design

9. Marey GA10NGDP 3.1 GPM Natural Gas Digital Panel Tankless Water Heater

9

Buy Now

7.5/10 our score

Buy Now

• Compact design saves space and allows for easy installation just about anywhere
• Only uses gas while water is flowing
• Digital temperature display
• Saves water and up to 60% less electricity than conventional tank water heater, making it cost effective and
• Does not require electricity (operates with 2 d cell battery)

10. Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, small, GREY

10

Buy Now

7.2/10 our score

Buy Now

• External digital thermostatic control with led display (+/1 degree accuracy)
• Threaded for easy replacement, simple installation, digital temperature display
• Durable copper immersion two heating elements, field serviceable. flow rate- up to 4.4 gpm
• Most advanced self-modulation, adjust power to meet hot water demand
• Simple installation bottom 3/4 inch npt water connections